Punch for compression molds
AssigneeSacmi Cooperativa Meccanici Imola Societa' Cooperativa
InventorDavide PENAZZI
Life of this patent
Estimating the term…
Abstract
A punch for the compression molding of plastic material for forming capsules for containers closure, wherein the punch includes a stem portion made of steel and a head portion made of copper alloy screwed to the stem portion, wherein a separation interface between the stem portion and head portion includes a passage for gas that reaches a bottom surface of the punch delimitating one forming cavity where the compression molding of the plastic material occurs, and wherein one channel internal to the head portion communicates with the passage for gas to enable extraction of gas out of the forming cavity.
Claims21
1-20. (canceled)
A punch for compression forming at least one dose of plastic material, said punch comprising:
- (a) at least one stem portion including a longitudinal axis and a first surface portion that is transverse to said longitudinal axis, said first surface portion being configured and arranged for the compression contact with the plastic material;
- (b) at least one head portion coupled with said stem portion, said head portion including a second surface portion that is transverse to said longitudinal axis and contiguous to said first surface portion, said second surface portion being configured and arranged for compression contact with the plastic material;
- (c) at least one separation interface between said stem portion and said head portion, said interface including at least one boundary line between said first and second surface portions, said interface including a gas passage that extends to said boundary line;
- (d) at least one channel that is internal to said head portion and that communicates with said gas passage to extract and/or introduce gas into a space delimited by said first and second surface portions where the compression molding of the plastic material occurs;
- and
- (e) a cooling circuit at least partly arranged inside said stem portion;
- wherein said cooling circuit includes at least one gap arranged in said interface so that the fluid circulating in said cooling circuit is in contact with said head portion, and wherein said punch comprises a first sealing element arranged on said interface to isolate said gas passage with respect to said cooling gap.
A punch for compression forming at least one dose of plastic material, said punch comprising:
- (a) at least one stem portion including a longitudinal axis and a first surface portion that is transverse to said longitudinal axis, said first surface portion being configured and arranged for compression contact with the plastic material;
- (b) at least one head portion coupled with said stem portion, said head portion including a second surface portion that is transverse to said longitudinal axis and contiguous to said first surface portion, said second surface portion being configured and arranged for compression contact with the plastic material;
- (c) at least one separation interface between said stem portion and said head portion, said interface including at least one boundary line between said first and second surface portions, said interface including a gas passage that extends to said boundary line;
- and
- (d) at least one channel that is internal to said head portion and that communicates with said gas passage to extract and/or introduce gas into a space delimited by said first and second surface portions where the compression molding of the plastic material occurs;
- wherein said stem portion and said head portion are made of two different materials.
Dependencies are inferred from the claim text.